Leveling attachment for threshers and other vehicles.



R. RISNER.

LEVELING ATTACHMENT FOR THRESHERS AND OTHER VEHICLES.

APPLICATION FILED NOV. 16, 1909. Patented Jan. 3, 1911.

2 SHEETS-15311! 1,

-N Hm "THE mamas PETERS 50., wAsl-lirlarmv, u. c.

v 3., RISN-ER! LEVELING ATTAGHMENT FOR THRESHERS AND OTHER VEHICLES.

. APPLICATION FILED 11017.16, 1909.

980,439. Patented Jan.3,1911.

2 SHEETSBHEET z.

THE NORRIS PETERS cm, WASHINGTON, u. 1:.

Wow I rrant II Elilitlld.

RUDOLPH RISNER, OF DUNSMORE, SQUTH DAKOTA.

LEVELING ATTACHMENT FOR THRESI-IERS AND OTHER VEHICLES.

Application filed November 16, 1909.

Specification of Letters Patent.

To all whom it may concern Be it known that I, RUDOLPH RIsNER, a citizenof the United States, residing at Dunsmore, in the county of Hyde, Stateof South Dakota, have invented certain new and useful Improvements inLeveling Attachments for Threshers and other Vehicles; and I do herebydeclare the following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same. Y

This invention relates to vehicles and has special reference to devicesfor leveling vehicles.

It is a well understood fact that all classes of threshing machines,wheel supported baling presses and the like machines are drawn fromplace to place and are oftentimes set up upon irregular ground. Thefront wheels of all of such vehicles have a certain movement relative tothe body of the machine so that the unevenness of the ground does notaffect the machine so long as the hind wheels are level. The hind wheelsas usually constructed are on a fixed axle and if the ground be uneventhe entire machine is thus thrown to one side or the other.

The principal object of the present invention is to provide an improvedmeans for adjusting the body of the vehicle relative to the hind axle orwheels so that the machinery may at all times remain perfectly levelwithout reference to the irregularity or inclination of the ground. Thisobject is usually obtained by digging out the ground beneath one or theother of the wheels as the case may be but in the present instance thereis providedan invention which consists, in general, of novel andimproved. means to vary the position of the rear bolsters with referenceto the rear axle.

The invention further consists in certain novel details of constructionand combinations of parts hereinafter fully described, illustrated inthe accompanying drawings, and specifically set forth in the claim.

In the accompanying drawings, like characters of reference indicate likeparts in the several views, and :Figure 1 is a section through thedevice showing the application of the same to a thresher. Fig. 2 is anenlarged top plan View of the device removed from the thresher. Fig. 3is an enlarged View of the device taken from one end of the threshershowing the same removed therefrom.

The numeral 10 indicates the body of a thresher or the like piece offarm machinery and at 11 are indicated the side sills. In theapplication of this invention the usual rear bolster is removed. andthis rear bolster is replaced by a pair of spaced bolsters l2 whereonthe side sills 11 are supported. Bearings 13 are secured centrally ofthe under side of the bolsters and these 'earings serve to hold thepivot bolt 14;.

At 1:") is dicated the rear axle and this rear axle is providedcentrally of its upper side with a bearing 16 which serves to receivethe pivot bolt 14- so that the bolster is pivoted to the axle in suchmanner that the ends of the holsters may be adjusted to or from therespective ends of the axle.

Supported on the pivot bolt 1 1 is a safety strap 17 provided withperforated ends which engage the pivot bolt and this strap extendsbeneath the central portion of the axle so that it serves to preventaccidental displacement of the axle by the bearing thereof pulling away.

In order to provide for the adjustment of the bolster'ends to or fromthe axle ends the upper Side of each bolster is provided at each endwith a bearing 18 and the bearings on one bolster are in opposition tothe hearings on the other bolster so that the openings therein are inaxial alinement. Supported in each pair of the bearings thus formed is ashaft 19 whereon is mounted a winding drum 20. One end of this shaftprojects beyond its bearing a considerable distance and securely fixedto this end is a worm wheel 21. Mounted on the side sill at each end ofthe axle is a pulley 22 and ropes 23 or other suitable flexible elementsare wound on the winding drums and extend over the pulleys. The freeends of these ropes are attached to suitable springs 23 which are inturn attached to eye bolts 24: secured at each end of the axle. It is tobe observed that the ropes are wound on their respective drums in thesame directions and in the present instance each rope is shown asleading off the top ofits respective drum. Now, in order to keep theproper tension between the two ropes one of the drums must be unwound asthe other is wound up and in order to accomplish this the worm wheels 21are both made either right hand or left hand so that they both may bedescribed as being of the same hand In order to actuate these drumsbrackets 25 are mounted on one of the bolsters and in these brackets 25is carried a shaft 26 so arranged that it passes over one of the wormwheels and under the other worm wheel. This shaft 26 is further providedwith a square or other suitable end 26 for the attachment of a crank notdeemed necessary here to be shown. Fixed on the axle 26 are worms 27,each of the same hand and one of these worms engages with one of theworm wheels 21 beneath the same while the other worm engages with theother worm wheel above the same.

In the operation of this device when it is desired to adJust the rearend of the ma chinery it is merely necessary to apply the crank to theaxle 26 and rotate the same in the desired direction. This will causeone of the drums 20 to wind up and the other drum to unwind and thepositions of the ends of the bolsters will be changed relative tothepositions of the ends of the axle. In other words, each of the bolsterswill have one end drawn toward the axle and the other end allowed tomove away therefrom. 0

There has thus been provided a simple and eliicient device of the kinddescribed and for the purpose specified.

It is obvious that minor changes may be made in the form andconstruction of this invention without departing from the materialprinciples thereof. It is not therefore desired to confine the inventionto the exact form herein shown and described, but it is wished toinclude all such as properly come within the scope of the appendedclaim.

Having thus described the invention, what is claimed as new, is

In a device of the kind described, a pair of spaced bolsters, a pivotbolt extending across said bolsters, an axle carried on said pivot bolt,and means carried on the bolsters to adjust the positions of the ends ofsaid bolsters relative to the ends of the axle, said means includingwinding drums supported on said bolsters at the ends of the bolsters, aflexible connection between each of said drums and the axle, theconnection at one end being wound on a drum in the same direction as theconnection at the other end, a worm wheel in fixed relation to eachdrum, both worm wheels being of the same hand a shaft rotatably mountedon one of the bolsters and provided with acrank receiving end, saidshaft extending over one drum and under the other, and worms on saidshaft meshing with said worm wheels.

In testimony whereof, I aflix my signature, in presence of twowitnesses.

RUDOLPH RISNER.

Vitnesses A. C. RUDINE, EMMA RISNER.

